Smart scale



FIG. 1 is a front perspective view of a smart scale showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a bottom perspective view.

The broken lines in the figures illustrate portions of the smart scale that form no part of the claimed design. 

CLAIM The ornamental design for a smart scale, as shown and described. 